tigris
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| posted on 25/1/07 at 02:28 PM |
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ERW RHS seam position
Is there any optimal way to position the seam in welded tubing in a spaceframe?
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Ivan
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| posted on 25/1/07 at 02:47 PM |
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In general terms - No - unless the tube is in bending (which they shouldn't be) then place it in the neutral axis.
But as very few tubes are in bending in a spaceframe put it where it can't be seen for best aesthetics.
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TheGecko
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| posted on 25/1/07 at 02:59 PM |
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Make sure you don't end up with the seam in a face you'll later want to drill for rivets as it can be a bugger to drill through.
D
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carlgeldard
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| posted on 25/1/07 at 06:14 PM |
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Can you post a picture of the box section as ERW should not have a seam and I'm a little confused.
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Peteff
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| posted on 25/1/07 at 07:16 PM |
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ERW should not have a seam and I'm a little confused.
 It's the side with the dark line down the middle of it on the tubing I used, very easy to spot. As for aesthetics, you won't see it
when it's got a coat of paint over it. 
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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meany
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| posted on 25/1/07 at 07:25 PM |
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quote:
Originally posted by TheGecko
Make sure you don't end up with the seam in a face you'll later want to drill for rivets as it can be a bugger to drill through.
D
oh poo.....i forgot about that
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JoelP
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| posted on 25/1/07 at 07:47 PM |
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someone once recommended that the seam be put at the bottom to help lower the centre of mass!
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t.j.
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| posted on 26/1/07 at 12:20 PM |
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I would prefer them at top.
When mister rust is looking for the weekest spot.
But at the end i think: it doesn't make a difference
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MikeRJ
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| posted on 26/1/07 at 12:27 PM |
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quote:
Originally posted by carlgeldard
Can you post a picture of the box section as ERW should not have a seam and I'm a little confused.
ERW certainy does have a seam, caused by the edges of the material being welded together. The seam is most obvious as a ridge when looking inside the
tube, but on a new tube is shown as discolouration on the outside. If the tube has been sanded down to remove surface rust etc. the seam can be
harder to see from the outside.
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Gav
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| posted on 26/1/07 at 12:33 PM |
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quote:
Originally posted by JoelP
someone once recommended that the seam be put at the bottom to help lower the centre of mass!
hehe i rememeber that one and was going to quote it but you got it in first
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